Road-scraper



(No Model.) 2 Sheets-Sheet 1.

A. J. NELLIS.

ROAD SGRAPER. No. 277,771. 7 Patented May 15,1883.

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2 Sheets-Sheet 2.

(No Model.)

A. J. NELLIS.

ROAD SGRAPER. No. 277,771. Patented May 15,1883,

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AARON J. NELLIS, OF PITTSBURG, PENNSYLVANIA.

ROAD-SCRAPER.

SPECIFICATION forming part of Letters Patent No. 277,771, dated May 15.1883.

7 Application tiled February 9, 1883. (No model.)

detail view, the carriage being removed to show the operative mechanismmore clearly. Fig. 3 is a longitudinalsection. Fig.4 isa sec tion of thetilting bar and pivotal connection of the scraper on the line 00 at,Fig. 3.

Like letters refer to likeparts wherever they occur.

My invention relates to that class of wheelscrapers employed for cuttingand dressing roadways, ditching along the sides of roads, and for likepurposes, and has for its object the production of simple, substantial,and efiicieut machinery, adapted, first, to adjust and maintain thescraper at any inclination required by the character of the surfaceoperated upon; secondly, to adjust and maintain the scraper at any anglerequired by the grade operated upon or to be produced; and, thirdly, toset and maintain the scraper at any angle to the line of draft requiredfor the proper distribution of the earth.

I will now proceed to describe my invention more fully, so that othersskilled in the art to which it appertains may apply the same.

In the drawings, A indicates a suitable frame for the support of themechanism, provided with a tongue, to, and wheels at.

B indicates the scraper, which may be of rectangular or otherappropriate form, and is preferably curved at its cuttingedge, asrepresented at b. This scraper B is loosely suspended by a pivotalconnection, I), from a suspension and tilting bar, 0, the connectionbeing such as to permit the scraper to assume any desired position orinclination to give a more or less acute cutting-angle to the blade,accordingly as the nature of the soil, presence of turf, 850., maydemand.

In order to permit the necessary horizontal be held transversely, oradjusted and fixed at rotation or'play of scraper B, it is best tochaint'er the pivot-holes e, as shown in Fig. 4, and also to leave somespace between the pivot-lugs on the scraper and tiltingbar U; but,instead thereof, a swivel-joint may be used, if preferred, as the meansby which the rotary movement is obtained is not material.

0 indicates a tilting bar pivoted at or-near its middle in an elongatedslot, 0, on a lever, B, which is in turn pivoted in the frame A, as atd. The rear end of tilting bar 0 has a series of pivot-holes, c, bymeans of which the pivotal connection between the scraper and bar can bechanged to increase or decrease the 6 5 tilting action of the said baror the cuttingangle of the scraper. The forward end of the tilting bar 0is also provided with a series of pin-holes, c, and passes through aslotted post, E, having a pin-hole, e, by which means the bar (J can belocked to retain the scraper or make it rigid at any desiredcutting-angle.

1) indicates the lever which sustains the tilting bar 0, the elongatedslot 0 of which permits the free play or rise and fall of the tiltingbar. This bar I) is pivoted on the frame A, as before specified, and isprovided with a dog, (7., which engages with a ratchet, D, to lock thelever in any desired position.

1 indicates a fixed plate secured to the frame A, and F a circle-plate,which rotates thereon. Both of said plates are provided with a-series ofpin-holes, so that by means of a pin the rotating or circle plate may hefixed in any desired position. The circle-plate is provided with twoarms or lugs, ff, from which links or pivoted rods L extendto and arepivoted near the opposite extremities of scraper B. By these devices thescraper can 0 any angle to the line of draft, so as to obtain 9 ashearing action and deliver the dirt at either side of the machine.Pivoted on the frame A, at opposite sides, are two elbow-levers, G, eachprovided with a dog, 9, and ratchet h, and dependent from the short armsof said elbow-le vers are links l, which encircle the links or rods L.By means of these elbow-levers G the rods L may be raised or lowered,and with said rods the corresponding end of the scrapor B.

M indicates a drivers seat arranged on the main frame within easy reachof the several levers, D G, by which the scraper B is operated.

The devices, being substantially such as specified, will operate asfollows: The "connection between the tilting barO and the scraperB, atb,is made, first, by using the pin-hole which will give the desiredangle, and ifit is then desired to lock the scraper in such givenposition, or make it rigid, it can be done by passing a pin through theslotted post E and corresponding pin-hole in the opposite end of thetilting lever b. Ifit is not desired to lock the scraper, the pin attheforward end is not passed through the slotted post, but the tiltingbar is left free to slide through the guide-post, when, by operating thelever D, (drawing the same backward,) the scraper B can be thrown into ahorizontalposition (see Fig. 3) to pass over or discharge the dirt whichis in the front of it. \Vhen it is desired to set the scraper at anangle to the line of draft, or so that it will have a shearing anddischarging action, the circleplate F is rotated either to the right orleft more or less, according to the degree of the angle and thedirection of the discharge desired, and then secured by passing the pinthrough the corresponding holes in the fixed plate F and thecircle-plate F. This pin may he a spring pin or dog operated from thedrivcrs seat by a suitable link or rod, if desired. When the scraper isto beset fora side grade either end thereof may be raised by operatingthe corresponding lever G, and by operating both levers G the entirescraper can be raised or lowered.

I have thus shown devices for setting and securing the scraper at anyrequired angle or inclination for cutting, according to nature of soil,for any given grade, and to secure a shearing cut and proper dischargeof the scraperin either direction. It is therefore only necessary,further, to call attention to the fact that the several connections areof a character which permit the free vibration of the cutter, relievethe parts of undue strain and Wear, and result in a simple, durable, andeffective-machine.

Having thus described my invention,whatI claim, and desire to secure byLetters Patent, 1s

1. The combination, in a wheeled scraper,of a scraper pivoted on atilting bar, a tilting bar pivoted on a sustaining and operating lever,asustaining and operating lever pivoted on the frame or carriage, and aslotted guide-post through which the free end of the tilting bar passes,substantially as and for the purpose specified.

2. The eombination,in a wheeled scraper,of a scraper pivoted on atilting bar, a, slotted guide-post through which the free end of thetilting bar passes, a circle-plate, and links which connect the oppositeends of the scraper with the circle-plate. substantially as and for thepurpose specified.

3. The combination, in a wheeled scraper, of the loosely-suspendedscraper B, the reciprocating tilting bar 0, having the scraper pivotedat or near one extremity, the opposite end being free, and theoperating-lever D,pivoted on the frame and having an elongated slot atthe point of its connection with the tilting bar, substantially as andfor the purposes specified.

4. The combination,in a wheeled scraper, of a loosely-suspended scraper,B, a circle-plate arranged on the carriage, in front thereof, rods L,connecting the extremities of the scraper with the circle-plate, looselinks Z, encircling the rods L, and levers G, substantially as and forthe purpose specified.

' In testimony whereof I affix my signature, in presence of twowitnesses, this 18th day of January, 1883.

AARON J. NELLIS,

Witnesses:

I. W. BITTER, Jr., H. B. MoUL'roN.

